Yes, it does support multi-point connections up to 2 devices.
Accessport Air will connect to 2 devices simultaneously and play the audio from one device at a time. You can seamlessly switch between devices without needing to re-pair.
Accessport Air is only a receiver, not a transmitter. It won't broadcast sound to a Bluetooth speaker. It will convert traditional speaker into a Bluetooth speaker so it can receive the sound from the source.